Carton-sealing machine.



`H. L. ESON, CARTON SEALNG MACHN.

APYLGATION FILED JAN. m, 1912.

'I SHEETS-SHEET l.

im WM@ E. "L. JUHNSN.. CARTON SEALING MACHINE.

W ANLIOAMON FILED mm2?, m2. L n 1 q 1 55,@55 @f Y @wanted E160. L @m3,

7 SHEETS-SHEET e.

u wm@ H. L JOHNSON.

CARTON SEALING MACHINE.

y APLIGATON FILED JAN. 27, 1912. 1 Y r Lgy? a Patented heb. 11, E910.

7 SHEETS-SHEET S4 Hs L, JDHNSGN.

OARTN HEALING MAGHINE.

APPLICATION FILED JAN. 27, 1912.

' H. L. JOHNSON. CARTON SEALING MACHINE.

APPLICATION FILED 5131.211912.

Panted Feb. u, 1913 'Y SHEETS-SHEET 5.

5mm/nto@ L MBHNSON @Mmm SEALING mcm'bmr YPLICATION FILED JAN. 27, 1912.

Patented Feb. n, i913.

MME; A

H. L. JOHNSON.

CARTON SEALING MACHINE. l APPLIUATIDN HLBD JAN. 27,'1912.

Patented Feb. u, wia

SHEETS-SHEET 7'V ns .er

K, MICHIGAN, .assIGNoIi 'ro JoHNsoN BATTLE CREEK, MICHIGAN.

CARTON-SEALIHG lM.CHINE Epeoiicetion of Letters atent.

Patented Feb.. Il, i913.

Application filed January 27, 193.2. Serial No. 673,723.

To all whom t may concern Be it known that I, HARRY L. JOHNSON, a Citizen of the United States, residing at the city of Battle Creek, county of Calhoun, and State of Michigan, have invented certain new and useful Improvements in Carton-Sealing Machines, of which the following is a specification.l

rIhis invention relates t-o improvements m carton sealing machines.

The main objects of this invention are, first, to provide an improved carton sealing machine adapted for sealing the bottoms of cartons. Second, to provide an improved cartoii sealing machine having a large capacity and one which is at the same. imc simple and compact in structure. Third, to provide an improved carton sealing machine which is entirely automatic except for the placing of the blanks to be sealed upon the carrier or conveyor .of the machine. Fourth, to pro-vide an improved means -for discharging the sealed cartons from the carrier or conveyer.

Further obliects, and objects relating to l structural details. will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the fi'illowing speciicaition.

'lhe invention is cleariy defined and pointed out in the claims.

A structure Axwhich is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing, forming a part of this specification, in which;

Figure I is a side view of a structure ein-- bodying the features of my invention. Fig'. II is a vertical central longitudinal section,

the convejver being shown in full lines. lF

III is an enlarged detail perspective o? the front or left hand end of the i-niichine as sho-wn illustrating' details of the renvoyer and con4 veyer ways. Fig'. IV is a dctoil plain view showing parts oi' the flap told' and glu; mechanism. Fig. V t ,rtical tion tulren on piumino* tc line 5-5 F53,

1 treo..

s ci the ron.) being Fig. VIII is a detail section taken on a line corresponding to line 8-8 of Fig. VII. Fig. IX is an enlarged detail view partially in vertical section on a line corresponding to line 9 9 of Fig. IV, showing the details of the iap folding and gluing mechanism. Fig. X is a detail horizontal section taken on a line corresponding lto line ILO-10 of F ig.

IX. Fig. XI is a detail vertical transverse section showing details of the gluing mechanism, taken on u line corresponding to the broken line Il-l 1. of Fig. IX. Fig. XII is a detail vertical longitudinal section taken on a line.correspoiuling to line 12-12 of Fig. XI. Fig. XIII is a detail vertical transverse section showing details of the conveyer and convcyer ways taken on a line corresponding to line 1 3-'13 of Fig. II. Fig. XIV is a detail horizontal section taken on a line corresponding to line Il-Mof Fig. Il showing details of the flap folding mechanism. Fig. XV is a detail section taken on a line corresponding to line 15-15 ofFig. XIV. Fig. XVI is a. detail section taken on a line corresponding to line 16-16 of Fig. XV. Fig. XVII is an enlarged detail section taken on a line corresponding to line IT--l of Fig. II showing structural `details of the cjecting or discharge mechanism for the conveyor. Fig. XVIII is an enlarged detail section taken on a line corresuonding to line iS-I8 of Fi XVII. Fig. IX is detail section ta en on a. line corresponding to line 19-19 of Fig. XVII.

In the drawings, similar reference characters refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at the ends of the section lilies.

Referring to the drawing, the frame in the structure illustrated, comprises a puir of .side members l consisting of horizontal sill.

pieces and suitable upright cross pieces.v

These side members are connected by cross Loils s arranged on the top longitudinal sills ci" the side members. The side members of inc i'ranic are provided with suitable legs ifi. iii' its rear end the frame 1s built up to support pui-ts of the tlap folding and gluing mechanism, the built up part comprising side members l which are mounted on side members l of the main frame over the rear cross sill `VI'lie frame members 4 are connected by the top cross piece 5 which assists Sil.

in making the frame rigid and serves as a support for parts of the mechanism as will appear.

Disposed centrally and longitudinally of the frame, is a conveyer or carrier Way comprising a top member 6 and a bottom mem ber 7', the top member 6 being mounted above the frame Across sills 2 While the bottom member 7 is mounted below these sills and beneath the top member 6. The Way member 7 is carried by brackets-8 depending from the cross sills 2. The Way members 6 and 7 are channeled at 9 to receive the conveyer or carrier chain 10.

The carton holders 11 are mounted at suitable intervals upon 'this chain and are provided With holder supports 12 which travel in grooves 13 in the sides of the ways. These grooves are for convenience in manufacturing'and assembling the parts formed by longitudinally rabbeting the sides of the 'channels 9 of the Way members and securing the bars 14 as by means of the screws 15 so that they overlap the rabbets and coact therewith to form the grooves 13. llhe ends of these .bars 14 are turned outwardly to provide guides 16 for the holder supports 12 and also to permit the swinging of the supports 12 as they pass from the way chan-. nels over the sprockets 17 and 18 which are arranged at the ends of the Way members land between them. The diameter of the sprockets is such that the conveyer chain is 'properly supported thereby and delivered intoithe Way channels.

The holder supports l2 are preferably angle pieces secured to the links of the conveyer chain on Which the holders 11 are mounted by means of the chain link pins 19. As the supports pass into the grooves of the ways the holders 11 are brought into an upright position and are carried forward in that position to the flap folding and gluing mechanism. and over the pressing rolls.

The conveyer sprocket 17 is mounted on'a shaft 20 at the front end of the machine, the shaft being carried by bearings 21 mounted on the upper front corners of the frame side members 1. The sprocket 18 is mounted on the shaft 22 which is carried by bearings 23 on the rear upper corners of the side mem bers 1.

The driving shaft 24 is mounted on bearings 25Vabove the shaft 22. The shaft 22 is driven by the sprocket chain 26 and sprockets 27 and The sprocket 27 is revolubly mounted on the shaft 24 and is connected by the gears 69 and 70 to the shaft 66. The shaft 66 is connected by the gears 67 and 68 to the shaft 24. The object of this arrangement will appear later.

rThe cartons to be sealed are placed upon the carrier holders 11 at the front of the machine. For' convenience in describing the arrangement and operation. of the parts of the mem er 30.

of the machine, I referto the tiaps of the cartons as front7 rear and side flaps. It will,

however, be understood that these designa- I tions are only relative to the positions of the cartons as they are acted upon by the machine.

As the cartons are carried along -by the conveyer, the rear inner flap is engaged by the flap folder 29 and folded for\\'ardly under the front inner flap. See Fig. IX. This folding is timed so that it is effected just previous to the engagement or folding of the front inner flap by the flap folder and retainer 3l) which is a fixed horizontal barlike member turned upwardly at its forward end so that the flap 'is pressed down and retained as the carton is carried along.

'l` he flap folder 29 is in the form of a curved shoe or striker carried by an arm 3l on the shaft 32. 'l'his shaft 32 is geared to the shaft which is in turn connected to the shaft 22 by the sprocket chain 34 and suitable sprockets on the shafts 33 and 22.l

The connection for the shafts 32 and 33 preferably consists of gears 35 and 36. These gears are eerentrically arranged on their shafts so as to secure' a variable speed for the shaft This secures a variable movement for the flap folder 2), the operative part of' the stroke being quickcned so as to insure the folding of the rear inner Hap just previous to the folding of the front inner flap ofthe fiap folder 2t) as it is carried along by the conveyor at a uniform speed.

As vthe cartons are carried under the folder 30, the side flaps are engaged by the spreaders o'r Guides 37 arranged at each` side These spreaders or guides 37 are preferably formed yof an A- shaped rod arranged through a support 38 on the cross piece 5. These guides 37 are in-v clined rear\\'aidly to spread and guide the side flaps to the glue roll 3f) and the supporting rolls 40. The guides 37am adjustably supported by the set screw L11. See Figs. IX to XII inclusive.

The glue receptacles ft2 are mounted on the cross piece 5 to deliver to the glue roll. The side tiaps are supported as they are being acted upon by the glue roll by the supportingl idlers 40 there being two of them al. each side. These supporting rollers 40 are tapered inwardly, their spindles 43 being arranged parallel with the face of the glue roller so that the outer ends of the rollers are closer to the glue roller than their inner ends. These supporting rollers. are arranged in spaced pairs, there being one at each side of the vertical, planey of the axes of the glue roller so that the lla ps are held effectively in Contact with the glue roller. See F ig. XII. n

The inner ends of the rollers being farther away from the periphery of the glue Wheel do not apply such stress to the iaps as in their closed insane? would be likely to tear them or the carton. Further, these idlers 40 being tapered, the tendency is to carry the flaps inward, Which further guards against distorting or tearing the carton.

The spindles 43 are mounted on plate-like brackets 44, carried by the uprights 45. See Figs. T and IX. The glue roller has a central peripheral groove 4G adapted to receive the flap closing and retaining bar 30. This re taining bar is provided with a'curved por tion or extension 47 at the rear of the machine which retains the front and rear aps osition until one of the side flaps is engage -by the first flap folder 48. These fia folders 48 are shaped somewhat like a mo d board and as the cartons are at this point of their progress inverted relative to their position when acted upon by thev glue roller, the flap folders 48 engage the under or outer sides of the side flaps, turning them inwardly. These flap folders are arranged on the ends of the horizontally disposed bars 49. These bars 4t) are arranged parallel and are supported by the yiangers 50 so that the carriers with the cartons thereon move between them as shown in X111. The bars are adjustubly supported by means of the bolts 5l.

At the rear of each flap folder 48 is a flap presser 52 provided with an engaging roller that moves inwardly and forwardly pressing the inner side flap against the folded inner flaps to seal it thereon and 'the outer side flap upon the scaled inner side t'ap to seal it thereon. These flap pressers .32 are carried by carriages 54 mounted on rodlike Ways 55 carried by the brackets 56. See Figs. XTV, XV and XVT. The carriages are moved back and forth on these ways and liap pressers are reciprocated by means of the cams 1:7 which have cam grooves 58 in their faces9 the cams being located h elow the carriages. The reciprocating,r pres-sers 52 are provided with pins 59 which engage the cam groovesl 58.

The vertical shafts (l are provided With slotted arms 6l which engage these pins of) so that the shafts are revolved, the pins are carried around in the cam grooves7 thus rcciprocating the presser arms as well as the carriages. This secures an inward and for*- ward work stroke for these prcssers. The llap folders and pressers are arranged in series,that is, one flap folder and its presser are arranged to act and then the other. This side flap sealing mechanism is similar to that shown in my application for patent for carton sealing machines, liled August 4,`

1908, Serial No. 446,893.

The shafts are connected by lthe sprocket, chains 62 and suitable sprockets to the sha fte 63 which are in turn connecteif the gears G4 and 85 to the shaft T. glue roll shaft 66 is connected by the gears 67 and 68 to the driving shaft' 24. The sprocket 27 and thea gear 69 which is connected thereto, are loosely or revolubly mounted on the shaft Q4 and driven through arranged in mesh with the gear G9. As the conveyer is driven through this sprocket 27 and the sprocket chain 26, the conveyer and the folding mechanism is controlled by the clutch 7l on the glue roll shaft GG, this clutch being arranged to connect the gear 70 with the shaft. The clutch is controlled by the lever 72. This provides driving means Whit-h permits the stopping of the conveyer and the sealing mechanism without stopping the glue roller. lf the glue roller were stopped frequently or for any considerable length ot' time.l it would soon become encumbered with the glue so that it would bc necessary to clean the saine. Bj; thus arranging the driving connections, proper timing of the parts secured.

After the cartons leavethe side flap sealing devices, the sealed flaps are engaged by a series of flap pressing and retaining rollers 73. These rollers are provided with gears 74 which are connected in train by gears 75. See Fig. Vil. @ne of the roll ers 78 is provided with. al sprocket 77 on the shaft 77. This shaft is connected by thc sprocket chain 77 and suitable sprocket Wheels to the driven shaft 22. These press the glue becomes sufficiently set to hold there.

The sealed cartons are discharged or ejected from thc holders automatically. The mechanism for accomplishing this in the structure illustrated, consists of the sprocket wheel l? which has an air chamber 77 there in. vided'with air passages 79 so that they are nozzles in effec These nozzle teeth disposed so as to eng: fe the links having the carton holders lin Tn the z"trncture illustrated, there are two of 'thejtcothdilre nozzles.

Tho shaft .20 is provided with an air passage 8U whirh is connected by the pipe 8l to the pump Si! and the pressure tank 83. The

they rotary type. This pui ip is connected by the spie'. Het chain 84 and the sprocket 'wheels 83' and 88 to the shaft 87. This sha ft Si is connected by the gears 88 and S) 'to the shaft 7S. n

The delivery of air through the nozzle 78 iis controlled by the valves 90, the stems 91 of which are supported to reciprocate in suit-able bearing brackets 92 on the Wheel within its rhainber 77. The springs 93 on the valve steine: hold the valves normally clo fl.

lie-sprocket Wheel 17 is revolnbly mountl ed on its shaft '20. the Wheelb-eing driven ,l through the conveyer. the ft .20 is a the gear 70 on the glue roll shaft Which is u T he teeth 78 of the Wheel i7 are pro f pump is shown in conventional form, or

flap retaining rolls retain the deps until cam 94 positioned to engage the members 95 on the valve stems 0l as the sprocket is revolved .ilternately, opening the valves and allowing the escape of the compressed air. This discharges through the nozzle into the holders l1, the outer ends 9G of which are perforated so that the sealed cartons are' blown off or ejected from the holders. This takes place at the front end of the machine.

The holders ll are provided Wit-h diverging stops 9T which engage the carton and y support it in proper operative position on the holders. A

llaving described the mechanism in detail, I will now point out its cycle of operation.

The open ended cartons are placed by the operator upon the holders 1l at. the front of the machine. As the cartons are carried along by the convover, the rear inner flap is folded by the flap folder 2t). The front inner flap is folded by the flap holder 30 upon the rear limer flap and the inner flaps are held in their folded positions by this flap folder bar and the curved extension or rctaining bar -ft until the side flap folding mechanism is reached. At the rear of the flap folder Qt), the side iaps are engaged by the guides 3T and guided between the glue roller 39 and the supporting idlers 10. The holders l1 then pass over the rear sprocket 18 to the second member of the conveyor way and the side flaps are acted upon by the flap folders 4S and the flap pressers 52 from which they pass to the retaining and pressing rollers 73 across which they arc carried to the front-end of the machine and automatically discharged. By arranging the parts in this manner, a very compact structure is provided and one which is simple and economical as well. Themachine is capable of very rapid operation and an operator finds it possible to place the cartons upon the holders very rapidly The machine is, as stated, entirely automatic .except for the placing of the cartons on the holders. By arranging the glue mechanism at the top of the machine and the side flap closing mechanism at the bottom, these parts are spaced so that the glue has an opportunity to become tacky before the side 4iaps are closed. At the same time', the machine is not en'- larged or lengthened by the provision of such a space. This is of advantage as it allows the use of thin glue which enables its being applied more evenly and with less AWaste than Where thicker or tackier glue must be used.

I have illustrated. and described various features of my improved sealing machine in detail in the preferred form in which I have embodied my invention.

.I have not attempted to illustrate or describe the various modifications which are possible as the disclosure made will enable those skilled in the art to which this invention relates to adapt my improvements as taste or circumstances may dictate. l desire however, to be understood as claiming the same specifically in the form illustrated as Well as broadly Within the scope of the appended claims.

Having thus described my invention, What I claim as new and desire to secure by Letters .Patent is:

- l. In a structure of the class described, the combination of the conveyer chain; a chambered sprocket; a shaft having a passage therein connected to a source of air supply under pressure and delivering to said chambered sprocket, said sprocket being revolubly mounted on said shaft and provided with nozzles adapted to act as teeth; holders mounted on said conveyor chain, the holders being mounted on links adapted to engage said nozzle teeth and provided with passages alined with said nozzles when the links carrying the holders are engaged therewith; valves for said nozzles; supports for said valves arranged within said sprocket chamber; springs 4arranged to hold said valves normally closed; and a cam mounted on said shaft Within said sprocket chamber and adapted to act on the valves to open the same as the sprocket is revolved.

2. In a structure of the class described, the combination of the conveyor chain; a chamber-ed sprocket; a shaft having a passage therein connected to a source of air supply under pressure and delivering to said chambered sprocket, said sprocket being revolubly mounted on said shaft and providedv with nozzles adapted to act as teeth; holders mounted on said conveyer chain, the holders being mounted on links adapted to engage said nozzle teeth; valves for said nozzles; and a cam mounted on said shaft Within said sprocket chamber and adapted to act on the valves to open the same as the sprocket is revolved.

3. In a structure of the class described, the combination of the conveyer chain; a chambered sprocket; a shaft having a passage therein connected to a source of air supply under pressure and delivering to said chambered sprocket, said sprocket being revolubly mounted on said shaft and provided With a nozzle adapted to act as a tooth; holders mounted on said eonveyer chain, 'the holders being mounted on links adapted to engage said nozzle tooth; a valve for said nozzle; and a cam mounted on said shaft Within said sprocket-chamber and adapted to act on the valve to open the sameas the sprocket is revolved.

4. In a structure of the class described, the combination of the conveyor chain; holders mounted thereon; a chambered sprocket having nozzles adapted to act as teeth; a supply of airunder pressure-connected tosaid chambered sprocket; valves the sprocket is revolved.

f 6. In a structure of the class described, the combination of the conveyer chain; holders mounted thereon; a chambered sprocket having a nozzle adapted'to act as a tooth; a supply of air under ressure connected to sald chambered sproc ret; a valve control 'ling said nozzle; and means for opening said valve as the sprocket is revolved.

6. In a structure of the class described, the combination got the conveyer chain; holders mounted thereon; a sprocket having a nozzle adapted to act as a tooth; and

means for intermittently delivering air .under pressure to said nozzle.

7. In a structure of the class descr1oeo,'the

d combination of theI conveyer; holders mount ed thereon; a wheelv driven with said conveyer provided with a nozzle adapted to de'- liver air to said conveyer holders as they are brought yinto alinemeint therewith in passing over the wheel; a supply of air under pressure connected to said nozzle; a valve controlling said nozzle; andmeans for opening said valve as the wheel is revolved.

8. In a structure of the class described,

"the combination of the conveyer; holders mounted thereon; a wheel driven with said conveyer provided with a nozzle adapted to deliver air to said-conveyer holders as they are brought into alinementl therewith in passing over the wheel; and means for intermittently delivering air to said nozzle.

9. In a structure of the class described, the combination of the conveyer, holders mounted thereon, and a wheel driven with said conveyer and provided with air delivery means adapt-ed to deliver air to said conveyer holders as they are brought -into alinement with vthe air delivery means in passing over the wheel.

10. In a structure of the class described, the combination of. the conveyer, holders mounted thereon, and a supporting wheel for' one' end of said conveyer provided with means fo delivering air to said holders as they are rought into alinement therewith in passing over the wheel.

,11. In a structure of the class described, the combination of the conveyer provided with carton holders, a wheel rotating with said conveyer and provided with means for delivering air to said holders as they are brought into alinement in passing over the wheel.

12. In a structure of the class described, the combination of a conveyer having carton holders thereon; a conveyer way comprising `sections arranged one above the other, the upper section being disposed to face up wardly, the bottom section being disposed to face downwardly; supporting wheels for ,the said inner said conveyer arranged .at the ends of the way sections; an inner flap folding means comprising a rear inner :flap folder adapted to feld the rear inner ap forward as the cartons are carried along by the conveyer; a shoe-like front flap folder adapted to fold the front inner flap upon the rear' inner flap; a curved flap retainer at the rear ot the conve er adapted to retain the inner aps in t eir folded position as the conveyer passes over the rear conveyer supporting wheel; a glue applying device for the yside flaps there being a space between flap folding and said glue applying means and the front. conveyer wheel to permit placing of the cartons upon the holders after the holdershave passed the front conveyer wheel; side liap folding and sealing means arranged below the conveyer whereby the glue applying and side flap folding means arespaced to permit the lue Vto become partially set prior to the olding of the side flaps upon the inner flaps; a series of pressing and retaining rollers arranged in front of said side fia folding and sealing means and over whic the sealed flaps are carried', said rollers being arranged below lthe open space of the upper section of the conveyer; and an e'ector lmeans arranged t0 discharge the seale cartons as the carton holders pass over the front conveyer supporting wheel.

13. In a structure of the class described, the combination of a conveyer having carton holders thereon; a conveyer way comprising sections arranged one above the other, the bottom section being arranged to face downwardly; supporting wheels for said conveyer arranged at the ends of the way sections; an inner ilap folding means; a flap retainer at the rear of the conveyer arranged to retain the innerliaps in their v 'folded position as the conveyer passes over the rear conveyer supporting wheel; a glue applying device for said aps, there being a space between the said fla folding and glue applying means and the ront conveyer wheel to permit placing of the' cartons upon the holderszafter the holders have passed the front conveyer supporting wheel; side flap folding and sealing means arranged be low the conveyer whereby the glue applying and side Hap folding means are spaced to permit the glue to become partially set prior to. the folding of the side flaps upon the inner flaps; and an ejector means arranged to ,discharge the sealed cartons at the front end of the conveyer.'

14. In a structure of the class described, the combination oi' a conveyer having holders mounted thereon; a conveyer way com-- prising sections arranged one above the other, the bottom section being arran ed to face downwardly; supporting whee s for said conveyer arranged at the ends of the 'lili ian way sections; an inner flap folding means above the conveyer, said side flap closingv and sealing means being arranged below the conveyer whereby the glue applying and side flap folding devices are spaced to permit the glue becoming partially set prior to the folding of the flaps together.

15. In a structure of the class described, the combination of an endless conveyor; a conveyer way comprising sections arran ed one above the other, the bottom'section eing arranged to face downwardly; supporting wheels for said conveyer arranged at the ends of the way sections; an inner flap folding means; a glue applying device for the side flaps, an inner flap retaining means arranged to retain the inner flaps during the passage of the holders from the upper to the lower reaches of the conveyer; a side flap closing and sealing means, said inner flap folding means and glue applying device being arranged above the conveyer, said side flap closing and sealing means being arranged below the conveyer whereby the glue applying and side iiap folding deviocs are spaced to permit the glue becoming partially set prior to the folding of the flaps together, -a series of retaining rollers arranged in front of saidside iap closing means and over which the sealed flaps are carried, said retaining rollers being connected by a train of gears to be driven in the same direction; and an ejector means arranged to discharge the sealed cartons as the carton holders pass over the front con veyer wheel.

16. In a structure of the class described, thecombination of an endle-ss conveyer; a conveyer way comprising sections arranged one above the other, the bottom section being arranged to face downwardly; supporting wheels for said eonveyer arranged at' the ends of t-he way sections; an inner YHap foldin means; a glue applying device for the si e flaps, an inner flap retaining means arranged to retain the inner flaps during the passage of the holders from the upper to the lower reaches of the conveyer; and a side flap closing and sealing means, said inner flap folding means and glue applying device being arranged above lthe conveyer,

said siCe flap closing and sealing means being arranged below the conveyer whereby the glue applying and side flap folding de- I to the folding of the glued flaps.

vices arespaced to permit the glue' becoming partially set prior to the folding of the voz.

a glue applying device for the side flaps, an

inner flap retaining means arranged to retain the inner daps during the assage of the holders frornthe rst to t e second reaches of the conveyer; a side flap closing and sealing means arrangedl to act while the holders are on the second reach of the conveyer, said inner fla glue applyin device eing arranged to act while the ho dersare on the first/reach of the conveyer whereby space is provided to permit the partial -setting of the'glue prior to the folding of the glued iaps, a series of pressing and retaining 4rollers arranged in front of said side lia closingmeans and over which the sealed aps are carried; and an ejector means arranged to discharge the sealed cartons as the carton holders pass over the'front conveyer sup orting wheel.

18. In a structure of the class described, the combination'of an endless conveyer having holders thereon; sugporting wheels for said conveyer; an inner ap folding means; a glue applying device for the side flaps, an inner flap retaining means arranged to re` tain the inner flaps during the passage of theho-lders from the first to the second reaches of the eonveyer; and a side flap closing and sealing means arranged te act While the holders are on the second reach of the conveyer, said inner flap folding means and glue applying device being arranged to act while the holders are on the first reach of the conveyer whereby space is provided to' permit the partial setting of the glue prior 19. In a structure of the class described, the combinationy with a conveyer having holders thereon; and a glue applying roller arranged transversely above said conveyer and flap supporting rollers arranged in co-vv acting spaced pairs below said roller to support the carton flaps in Vcontact withjsaid glue roller as the cartons are carried past the same, the flaps being slightly curved by said rollers as they` contact with the glueroll, said rollers being inwardly tapered and having circumferential grooves, the axes of vthe rollers being parallel with the axis of the glue roller so that their 'inner ends, are farther away from the same than their outer.

Q0. In a structure of the class described, the. combination with a conveyer having holders thereon; and a glue applying roller arranged transversely above said conveyer and flap supporting rollers arranged in coacting spaced pairs below said roller to support the carton flaps in Contact with said.

Lomme? ll glue roller als'l the cartons are earned pas l sojow en-mgmg sind loop wnereby the guides the same, the lapS bengslghtly @awed lay l are adjustzilJ-ly supported,

said rollers as they onta'ct wh -heglue roll, said rollers bemg. inwardly tapeed.

21. In. e structure offshe class described,

the combination of i cognveyer; e glue roller;

'-lap supporting 'rollerfs' fcoactng with said glue roller.; flap guides arranged in front of seid glueroller, said. guides being a Ushaped 10 rod suppoted'ibylthe loop thereof; @n a set lin wtnees Whereo, l my hand m16. seal m the p'esence of two Wltmesses.

. HARRY L. JoHNSoN; [L s@ Vflmesses:

GE@ C. MCKAY, F. L. CONDQN,

have hereunto setl 

